Global Patent Index - EP 1477829 A4

EP 1477829 A4 20050810 - POLARIZATION RETAINING PHOTONIC CRYSTAL FIBER

Title (en)

POLARIZATION RETAINING PHOTONIC CRYSTAL FIBER

Title (de)

POLARISATIONSERHALTENDE FASER MIT PHOTONISCHEN KRISTALLEN

Title (fr)

FIBRE DE CRISTAL PHOTONIQUE A MAINTIEN DE POLARISATION

Publication

EP 1477829 A4 20050810 (EN)

Application

EP 03705022 A 20030123

Priority

  • JP 0300617 W 20030123
  • JP 2002019525 A 20020129

Abstract (en)

[origin: EP1477829A1] A polarization-maintaining photonic crystal fiber 10 includes six thin holes 4a and 4b adjacent to a core 1. Among these holes 4a and 4b, a pair of holes 4b at opposite sides of the core 1 have a diameter greater than that of the other four thin holes 4a, and therefore, the polarization-maintaining photonic crystal fiber 10 has polarization-maintaining ability. An overclad layer 3 exists around the clad layer 2 which includes a large number of thin holes 4a and 4b around the core 1. The overclad layer 3 includes a pair of marking portions 5 at opposite sides of the core 1. The marking portions 5 are holes which can be seen at positions different from the clad layer 2 when the fiber 10 is viewed from a position right above the fiber 10 in the drawing. In this way, the direction of the polarization plane of the polarization-maintaining photonic crystal fiber 10 is identified. <IMAGE>

IPC 1-7

G02B 6/00; G02B 6/16; G02B 6/20

IPC 8 full level

G02B 6/00 (2006.01); C03B 37/012 (2006.01); G02B 6/02 (2006.01); G02B 6/024 (2006.01); G02B 6/032 (2006.01)

CPC (source: EP US)

C03B 37/01217 (2013.01 - EP US); C03B 37/0122 (2013.01 - EP US); G02B 6/02333 (2013.01 - EP US); G02B 6/02347 (2013.01 - EP US); G02B 6/02357 (2013.01 - EP US); G02B 6/024 (2013.01 - EP US); C03B 2203/14 (2013.01 - EP US); C03B 2203/30 (2013.01 - EP US); C03B 2203/42 (2013.01 - EP US)

Citation (search report)

  • [A] WO 0142829 A2 20010614 - UNIV BATH [GB], et al
  • [A] US 2001026667 A1 20011004 - KAWANISHI SATOKI [JP], et al
  • [A] WO 0049436 A1 20000824 - UNIV BATH [GB], et al
  • [A] ORTIGOSA-BLANCH A ET AL: "HIGHLY BIREFRINGENT PHOTONIC CRYSTAQL FIBERS", OPTICS LETTERS, OPTICAL SOCIETY OF AMERICA, WASHINGTON, US, vol. 25, no. 18, 15 September 2000 (2000-09-15), pages 1325 - 1327, XP000975103, ISSN: 0146-9592
  • See references of WO 03065089A1

Citation (examination)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 1477829 A1 20041117; EP 1477829 A4 20050810; JP 2003222739 A 20030808; JP 3630664 B2 20050316; US 2005084223 A1 20050421; WO 03065089 A1 20030807

DOCDB simple family (application)

EP 03705022 A 20030123; JP 0300617 W 20030123; JP 2002019525 A 20020129; US 50198304 A 20040721